Alexander William Bannwart (December 25, 1880 – February 21, 1959), also known as Al Winn, was a Swiss-American businessman.

In 1917, Bannwart and a group of pacifists went to the United States Capitol to ask their representatives to oppose American entry into World War I.

The team had been in a ten-game losing streak before Bannwart joined, and manager Fred Lake decided to call him "Al Winn".

[1] When a proposed sale of the team fell through, Bannwart bought the Tigers on July 20 for $500 ($16,956 in current dollar terms).

[16] Upon these news reports, some of the founding members of the Colonial League resigned, fearing banishment by the National Baseball Commission.

Later in the 1914 season, Bannwart drew anger when he attempted to make last minute changes to the schedule designed to increase competitiveness in the standings and maximize profits at the box office.

[23] Instead, he sent teams a directive on selling season tickets,[24] unsuccessfully petitioned the National Commission to reclassify the Colonial League as Class B,[25] and drew up the 1915 schedule.

[26] At the April 1915 league meeting, Coppen was re-elected as president and Bannwart was elected secretary.

When Wilson ran for president of the United States in the 1912 presidential election, Bannwart campaigned for him.

[38] Bannwart joined with other pacifists to protest against the proposed American entry into World War I.

[41] After reading President Wilson's remarks to Congress, Bannwart changed his opinion, supporting America's involvement in the war.

He delivered remarks to the Emergency Peace Federation supporting the war, ending his association with the group.

[44] Prior to the 1919 court date, Lodge made a public acknowledgement that he hit Bannwart first, which settled the lawsuit.

[48] In 1920, Bannwart ran for the 19th district seat in the Massachusetts House of Representatives in the primary elections for the Democratic and Republican Party, losing in both.

[50] In December 1924, he and two others were cited for running an unlicensed dance hall out of the Back Bay mansion.

Bannwart appealed the conviction[53] and changed his plea to nolo contendere and paid the fine.

Her will provided an income to Carl and money to Gordon B. Hanlon, but Alexander was disinherited from her $100,000 estate ($1,266,390 in current dollar terms).